[Changelog] Add SE-0419 to the changelog.

[al45tair]

This is now implemented, at least for macOS and Linux.

[al45tair]

@swift-ci Please smoke test

[benrimmington]

This will also need a link reference, near the end of the file.

[SE-0419]: https://github.com/swiftlang/swift-evolution/blob/main/proposals/0419-backtrace-api.md

[al45tair]

@swift-ci Please smoke test

[benrimmington]

I'm curious to know what errors Backtrace.capture() will throw, and whether it should be using "typed throws". The current implementation only throws a NotImplemented error on Windows.

[al45tair]

I'm curious to know what errors Backtrace.capture() will throw, and whether it should be using "typed throws". The current implementation only throws a NotImplemented error on Windows.

The underlying implementation is more sophisticated than the API appears on the surface — for instance, it is able to capture a backtrace from a remote process. There are quite a few errors that it might conceivably throw while doing that (e.g. MachError, POSIXError, MemserverError); all of these are SPI. Some of them might be promoted to API at some point, but probably not all of them, and I also don't think it's necessarily a good idea to enumerate all the errors this might throw in future as some of them may be highly platform specific.